the growth of women's presence in education and higher education, increased in the '70s and 80s and plateaued sometime in the '90s, depending on which measure you look at. and then we really saw strong pattern of women entering men's occupations, especially in middle class jobs, those women, college graduates, but not so much movement the other way. women were entering professions like law and medicine or realty or educational administration that had been previously male jobs. but men weren't going into nursing and teaching preschool and elementary school -- >> let's look at some of those numbers. that is such a shocking part of your study. one in four men actually work in fields you report that are dominated 90% by males. one in three women work in fields that have 80% of women in the workplace of the your study tells the story of a professional environment in the united states where huge, huge portions of our working public are in a one gender office. >> yes, office might not be the words for it -- >> workplace, construction and plumbing and all of that. it is the case that our worlds at ho